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公开(公告)号：US20200158907A1
公开(公告)日：2020-05-21
申请号：US16198117
申请日：2018-11-21
摘要： A method for transforming an earth formation and/or production equipment based on correcting nuclear magnetic resonance (NMR) data to account for partially water-saturated rock includes: receiving NMR logging data having echo-trains for an earth formation; inverting the echo-trains to provide transverse relaxation time constant (T2) distributions for various components of fluid in the earth formation; substituting a T2 distribution for mobile water of fully water-saturated rock for a T2 distribution for mobile water of partially water-saturated rock based on values of the mobile water T2 distribution of partially water-saturated rock and a total porosity constraint; summing the T2 distribution for mobile water of fully water-saturated rock and a T2 distribution for an immobile water component of the fluid to provide a T, distribution for fully water-saturated rock; and transforming the earth formation and/or the production equipment based on a parameter derived from the T2 distribution for fully water-saturated rock.
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公开(公告)号：US11092714B2
公开(公告)日：2021-08-17
申请号：US16198117
申请日：2018-11-21
摘要： A method for transforming an earth formation and/or production equipment based on correcting nuclear magnetic resonance (NMR) data to account for partially water-saturated rock includes: receiving NMR logging data having echo-trains for an earth formation; inverting the echo-trains to provide transverse relaxation time constant (T2) distributions for various components of fluid in the earth formation; substituting a T2 distribution for mobile water of fully water-saturated rock for a T2 distribution for mobile water of partially water-saturated rock based on values of the mobile water T2 distribution of partially water-saturated rock and a total porosity constraint; summing the T2 distribution for mobile water of fully water-saturated rock and a T2 distribution for an immobile water component of the fluid to provide a T2, distribution for fully water-saturated rock; and transforming the earth formation and/or the production equipment based on a parameter derived from the T2 distribution for fully water-saturated rock.
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公开(公告)号：US11231474B2
公开(公告)日：2022-01-25
申请号：US16839859
申请日：2020-04-03
申请人： Baoyan Li , Julio Roberto Arro , Holger Thern , Hasan Kesserwan , Guodong Jin
发明人： Baoyan Li , Julio Roberto Arro , Holger Thern , Hasan Kesserwan , Guodong Jin
IPC分类号： G01R33/50 , G01V3/32 , G01R33/56 , G01R33/561
摘要： A method of estimating properties of a resource bearing formation includes receiving, by a processor, a measured echo train generated by a nuclear magnetic resonance (NMR) measurement device deployed in a region of interest, and a measured noise of the measured echo train, and calculating a T2 distribution subject to a nonlinear equality constraint, the nonlinear equality constraint dependent on the measured noise and a fitting error between the measured echo train and a modeled echo train. Calculating the T2 distribution includes estimating a solution for the T2 distribution that is closest to satisfying the nonlinear equality constraint.
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公开(公告)号：US20200319282A1
公开(公告)日：2020-10-08
申请号：US16839859
申请日：2020-04-03
申请人： Baoyan Li , Julio Roberto Arro , Holger Thern , Hasan Kesserwan , Guodong Jin
发明人： Baoyan Li , Julio Roberto Arro , Holger Thern , Hasan Kesserwan , Guodong Jin
IPC分类号： G01R33/50 , G01R33/561 , G01R33/56 , G01V3/32
摘要： A method of estimating properties of a resource bearing formation includes receiving, by a processor, a measured echo train generated by a nuclear magnetic resonance (NMR) measurement device deployed in a region of interest, and a measured noise of the measured echo train, and calculating a T2 distribution subject to a nonlinear equality constraint, the nonlinear equality constraint dependent on the measured noise and a fitting error between the measured echo train and a modeled echo train. Calculating the T2 distribution includes estimating a solution for the T2 distribution that is closest to satisfying the nonlinear equality constraint.
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公开(公告)号：US11493461B1
公开(公告)日：2022-11-08
申请号：US17360009
申请日：2021-06-28
申请人： Baoyan Li , Hasan Kesserwan
发明人： Baoyan Li , Hasan Kesserwan
摘要： A method of estimating a wettability characteristic of a rock material includes acquiring a plurality of T2 distributions based on nuclear magnetic resonance (NMR) measurements of a rock material under a plurality of fluid saturated rock conditions, constructing a measurement matrix based on the plurality of T2 distributions, and performing non-negative factorization of the measurement matrix to determine feature components. The method also includes reconstructing the plurality of T2 distributions based on the feature components, and extracting a first set of T2 distributions associated with mobile water under a wetting condition and a second set of T2 distributions associated with mobile water under a non-wetting condition based on the feature components, and calculating a wettability index (WI) based on the first extracted set of T2 distributions and the second extracted set of T2 distributions.
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公开(公告)号：US20220026336A1
公开(公告)日：2022-01-27
申请号：US16936829
申请日：2020-07-23
申请人： Shouxiang Ma , Syed Shujath Ali , Guodong Jin , Hasan Kesserwan
发明人： Shouxiang Ma , Syed Shujath Ali , Guodong Jin , Hasan Kesserwan
IPC分类号： G01N15/08
摘要： A method of estimating a material mechanical property of a porous material, for an application or objective with a specific application frequency and application strain amplitude, includes estimating an application frequency and an application strain amplitude for use in a targeted application or objective, and constructing a frequency transfer function relating the material mechanical property to measurement frequencies, the measurement frequency range including a measurement frequency different from the application frequency. The method also includes constructing a strain amplitude transfer function relating the material mechanical property at the measurement strain amplitude and the material mechanical property at the application strain amplitude, the measurement strain amplitude different from the application strain amplitude, deriving the material mechanical property from the frequency transfer function using the application frequency, and predicting the material mechanical property from the strain amplitude transformation function using the derived material mechanical property.
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公开(公告)号：US11493465B2
公开(公告)日：2022-11-08
申请号：US17084791
申请日：2020-10-30
申请人： Salah Al-Ofi , Hasan Kesserwan , Guodong Jin
发明人： Salah Al-Ofi , Hasan Kesserwan , Guodong Jin
摘要： Systems and methods to evaluate a formation by analyzing drill cuttings involve a multi-frequency dielectric coaxial probe to obtain a reflected voltage from a medium under test based on a reference voltage over a frequency range. The medium under test includes the drill cuttings. The system includes a processor to compute an effective permittivity of the drill cuttings over the frequency range based on a reflection coefficient, which is a ratio of the reflected voltage to the reference voltage over the frequency range, and to determine one or more parameters from the effective permittivity. The one or more parameters are used to make decisions about subsequent drilling in the formation.
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公开(公告)号：US20200174152A1
公开(公告)日：2020-06-04
申请号：US16205353
申请日：2018-11-30
申请人： Hasan Kesserwan , Guodong Jin
发明人： Hasan Kesserwan , Guodong Jin
摘要： An apparatus for estimating fracture properties of a resource bearing formation includes a nuclear magnetic resonance (NMR) measurement device configured to be deployed in a region of interest including a tight rock formation region, the NMR measurement device including a transmitting assembly configured to transmit an NMR pulse sequence into the tight rock formation region, a receiving assembly configured to detect NMR signals corresponding to a response of the formation region to the pulse sequence, and a processor configured to receive the NMR signals. The processor is configured to invert the NMR signals into a transverse relaxation time (T2) distribution, separate the T2 distribution based on a cut-off time into a first volumetric indicative of matrix and pore responses and a second volumetric indicative of fracture responses, estimate a pore size distribution based on the second volumetric, and calculate a fracture aperture size distribution based on the pore diameter.
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公开(公告)号：US20220034222A1
公开(公告)日：2022-02-03
申请号：US16943342
申请日：2020-07-30
申请人： Salah Al-Ofi , Bilal Saad , Syed Shujath Ali , Hasan Kesserwan , Guodong Jin
发明人： Salah Al-Ofi , Bilal Saad , Syed Shujath Ali , Hasan Kesserwan , Guodong Jin
摘要： Examples described herein provide a computer-implemented method for deriving textual properties of a reservoir formation. The method includes acquiring multi-frequency dielectric data (εmeas). The method further includes applying a dielectric mixing model between different fluid phases to generate an effective fluid permittivity (εfluid) by mixing the permittivity of water and hydrocarbon fluids. The method further includes applying the dielectric mixing model between the effective fluid permittivity (εfluid) and a matrix permittivity (εm). The method further includes minimizing a difference between a measured dielectric response and the dielectric mixing model by optimizing model parameters. The method further includes computing a cementation exponent (m) and a saturation exponent (n) from the multi-frequency dielectric data (εmeas). The method further includes estimating a formation property based at least in part on the cementation exponent (m) and the saturation exponent (n). A wellbore operation is controlled based at least in part on the formation property.
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公开(公告)号：US11366049B2
公开(公告)日：2022-06-21
申请号：US16936829
申请日：2020-07-23
申请人： Shouxiang Ma , Syed Shujath Ali , Guodong Jin , Hasan Kesserwan
发明人： Shouxiang Ma , Syed Shujath Ali , Guodong Jin , Hasan Kesserwan
IPC分类号： G01N15/08
摘要： A method of estimating a material mechanical property of a porous material, for an application or objective with a specific application frequency and application strain amplitude, includes estimating an application frequency and an application strain amplitude for use in a targeted application or objective, and constructing a frequency transfer function relating the material mechanical property to measurement frequencies, the measurement frequency range including a measurement frequency different from the application frequency. The method also includes constructing a strain amplitude transfer function relating the material mechanical property at the measurement strain amplitude and the material mechanical property at the application strain amplitude, the measurement strain amplitude different from the application strain amplitude, deriving the material mechanical property from the frequency transfer function using the application frequency, and predicting the material mechanical property from the strain amplitude transformation function using the derived material mechanical property.
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